Gsm Based Remote Fault Indicator For Distribution Line Reliability Improvement

Abstract

The paper presents development of distribution system GSM based fault detection and location to decrease power outage and improve reliability of the system. Assela distribution system is taken as case study to demonstrate the effectiveness of the proposed technique. It is found that the three (3) year primary and secondary data is collected, analyzed and the result shows that 55.4% of the total hours and 52.95% of the total frequency is related to distribution related problem. The proposed distribution system fault detection and location is capable of detecting feeder faults, fault location, isolation the faulty section of the feeder and finally reporting the faulted area to the authorities or operator. Thus it has the capacity to significantly improve the reliability of the distribution system by decreasing frequency of fault, decrease time for the technical crew and decrease number of interrupted customer. If the measured electrical quantity or parameter are above or below preset value then the system automatically operate the auto recloser. Where as in another direction it will detect the location of fault occurred by comparing voltage and current magnitude which insure shorter response time for the technical crew to search this faults and helps in saving the system from damage and long period energy waste. The system have a master unit at the control station or at substation and line unit at each node which have a current transformer , voltage transformer , Arduino microcontroller, RS 232 connector ,a GSM module and auto recloser switch . The performance of the proposed model is tested with the simulation to check the reliability improvements of Assela distribution gumguma feeder network. The result shows SAIDI and SAIFI is improved by 62.084% and 64.2036%.